<p><b>duda</b> 2008-07-01 13:50:53 -0600 (Tue, 01 Jul 2008)</p><p>A few more minor formatting changes.<br>
<br>
M users_guide_chap6.doc<br>
</p><hr noshade><pre><font color="gray">Modified: trunk/wrf/UsersGuide/users_guide_chap6.doc
===================================================================
--- trunk/wrf/UsersGuide/users_guide_chap6.doc        2008-07-01 19:00:46 UTC (rev 99)
+++ trunk/wrf/UsersGuide/users_guide_chap6.doc        2008-07-01 19:50:53 UTC (rev 100)
@@ -1,6 +1,6 @@
-ࡱ
7) Plot the distribution of for each type of observation types.
WRF-Var observation preprocessor is residingOBSPROC program is found under the directory WRFDA/var/obsproc directory. To compile the program, issue the following commands.
-        > cd WRFDA/var/obsproc
+        > cd WRFDA/var/obsproc
        > make
Once this is completed (a minute or less on most machines), you can check for the presence of the OBSPROC executable, src/3dvar_obs.exe
Before running 3dvar_obs.exe, create the desired required namelist file namelist.3dvar_obs (see WRFDA/var/obsproc/README.namelist, or the section HYPERLINK \l "_Description_of_Namelist_1" Description of Namelist Variables for details).;
@@ -235,7 +235,7 @@
Download the tutorial test data for a con200 case which is valid at 00 UTC 02 January 2007 test case from
HYPERLINK "http://www.mmm.ucar.edu/wrf/src/data/WRFV3-Var-testdata.tar.gz" http://www.mmm.ucar.edu/wrf/src/data/WRFV3-Var-testdata.tar.gz
Once you have downloaded WRFV3-Var-testdata.tar.gz file to $DAT_DIR, then extract it by typing
-        > gunzip WRFV3-Var-testdata.tar.gz
+        > gunzip WRFV3-Var-testdata.tar.gz        
        > tar -xvf WRFV3-Var-testdata.tar
Now you may should find the following three sub-directories/files under $DAT_DIR
ob/2007010200/ob.little_r         ### Observation data in little_r format
@@ -482,7 +482,7 @@
SUCCESS COMPLETE WRFVAR
*** WRF-Var completed successfully ***
-A file called namelist.output (which contains the complete namelist settings) will be generated after a successful da_wrfvar.exe run. Those settings appear in namelist.output that are not specified in your namelist.input are the default values from WRFDA/Registry/Registry.wrfvar.
+A file called namelist.output (which contains the complete namelist settings) will be generated after a successful da_wrfvar.exe run. Those settings appear in namelist.output that are not specified in your namelist.input are the default values from WRFDA/Registry/Registry.wrfvar.
After We provides a sample script to run the codes in WRFDA/var/scripts/wrappers/da_run_suite_wrapper_con200.ksh. Following environment variables needs to be set in this script depending upon your case.
REL_DIR                 - Full path of the parent code directory
WRFVAR_DIR         - Full directory path of wrfvar under $REL_DIR
@@ -524,9 +524,10 @@
drwxr-xr-x 2 xinzhang 4096 Jun 18 13:15 trace
-rw-r--r-- 1 xinzhang 4393186 Jun 18 13:17 unpert_obs
drwxr-xr-x 3 xinzhang 4096 Jun 18 13:17 working-rw-r--r-- 1 xinzhang 3651560 Jun 18 13:17 wrfvar_output
-Content of some useful diagnostic files are as follows:
-cost_fn & and grad_fn: The twoese files hold (in ASCII format) WRF-Var cost & and gradient function values respectively for only the first and last iterations. However, iIf you setrun with NL_CALCULATE_CG_COST_FN=true (in record &WRFVAR11 in namelist.input), it lists thesethe cost function values forof each iteration will be calculateds,. For visualization purpose, sometimes it is good to run WRF-Var with this option, as it will list the cost and gradient function for each iteratihowever, the run time will be significantly increasedon. FollowingAn NCL script (WRFDA/var/graphcs/ncl/plot_cost_grad_fn.ncl) may be used tois provided for plotting the content of cont_fn & and grad_fn , if t!
hese files are generated with NL_CALCULATE_CG_COST_FN=true. It may be visualized using following NCL script: WRFDA/var/graphcs/ncl/plot_cost_grad_fn.ncl as:
-
+Content The content of some useful diagnostic files are as follows:
+cost_fn & grad_fn: The twoese files hold (in ASCII format) WRF-Var cost & gradient function values respectively for only the first and last iterations. However, iIf you setrun with NL_CALCULATE_CG_COST_FN=true (in record &WRFVAR11 in namelist.input), it lists thesethe cost function values forof each iteration will be calculateds,. For visualization purpose, sometimes it is good to run WRF-Var with this option, as it will list the cost and gradient function for each iteratihowever, the run time will be significantly increasedon. FollowingA NCL script (WRFDA/var/graphcs/ncl/plot_cost_grad_fn.ncl) may be used tois provided for plotting the content of cont_fn & grad_fn , if these files are generated with NL_CALCULATE_CG_C!
OST_FN=true. It may be visualized using following NCL script:!
WRFDA/
var/graphcs/ncl/plot_cost_grad_fn.ncl as:
+
+cost_fn and grad_fn: These files hold (in ASCII format) WRF-Var cost and gradient function values, respectively, for the first and last iterations. However, if you run with NL_CALCULATE_CG_COST_FN=true, these values will be listed for each iteration; this can be helpful for visualization purposes. The NCL script WRFDA/var/graphcs/ncl/plot_cost_grad_fn.ncl may be used to plot the content of cost_fn and grad_fn, if these files are generated with NL_CALCULATE_CG_COST_FN=true.
Note: Make sure that you removed first two records lines (header) in cost_fn & and grad_fn before you plot. Also you need to specify the directory name for these two files.
gts_omb_oma: It holds (in ASCII format) information of each type ofall observations, that got passed in WRF-Var. like its Each observation has its observed valuevalue, quality flag, observation error, observation minus background (OMB), and & observation minus anal!
ysis (OMA). This information is very useful for (both analysis or forecasts) verification purposes.
namelist.input: WRF-Var input namelist file. It displays all the non-default options which user defined. If any of your namelist defined options did not appear in this file, you may like to check its name and match it with the WRFDA/Registry/Registry.wrfvar.
@@ -851,10 +852,10 @@
-WRF-ARW V3: Users Guide        6- PAGE 38
+WRF-ARW V3: Users Guide        6- PAGE 28
-WRF-ARW V3: Users Guide        6- PAGE 37
+WRF-ARW V3: Users Guide        6- PAGE 1
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